Improved Algorithm for Detection of Self-clearing Transient Cable Faults

This paper presents a transient cable fault detection technique for typical medium voltage cable. The subject of transient cable failures is firstly introduced together with an illustration of the typical fault characteristic. A power system test model was developed to replicate the physical phenomena and this is illustrated to show a good correlation with physical recordings. This model is shown to be very useful for validating the detection technique as it allows easy variation of the fault duration. Studies show that the technique is able to offer a number of significant advantages for distribution systems especially as an early warning system.